REDHAT-BUG-2039003
First published: Mon Jan 10 2022(Updated: )
The virgl forgets to initialize the memory pointed by the res->ptr when it creates resource. And the memory can be mapped to the guest kernel when the VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING is issued. However, the guest userspace can read the data in the unintialized host memory by mmaping it from the guest kernel. Upstream fix: <a href="https://gitlab.freedesktop.org/virgl/virglrenderer/-/commit/b05bb61f454eeb8a85164c8a31510aeb9d79129c">https://gitlab.freedesktop.org/virgl/virglrenderer/-/commit/b05bb61f454eeb8a85164c8a31510aeb9d79129c</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| libvirglrenderer |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://gitlab.freedesktop.org/virgl/virglrenderer/-/commit/b05bb61f454eeb8a85164c8a31510aeb9d79129c
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2039343
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2039342
- https://gitlab.freedesktop.org/virgl/virglrenderer/-/merge_requests/654
- https://bugzilla.redhat.com/show_bug.cgi?id=2039003
Frequently Asked Questions
What is the severity of REDHAT-BUG-2039003?
The severity of REDHAT-BUG-2039003 is considered high due to potential information leakage from uninitialized memory.
How do I fix REDHAT-BUG-2039003?
To fix REDHAT-BUG-2039003, update to the latest version of the Freedesktop Virglrenderer where this issue has been addressed.
What are the potential impacts of REDHAT-BUG-2039003?
The potential impacts of REDHAT-BUG-2039003 include unauthorized access to sensitive data due to memory not being initialized properly.
Which software is affected by REDHAT-BUG-2039003?
The affected software for REDHAT-BUG-2039003 includes Freedesktop Virglrenderer.
When was REDHAT-BUG-2039003 reported?
REDHAT-BUG-2039003 was reported as a vulnerability recently impacting the Virglrenderer.
- agent/type
- agent/last-modified-date
- agent/first-publish-date
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2022-0175
- agent/severity
- agent/references
- agent/description
- agent/event
- agent/source
- agent/softwarecombine
- agent/tags
- agent/guess-ai
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/freedesktop
- canonical/libvirglrenderer